Definitions for quietuskwaɪˈi təs
Random House Webster's College Dictionary
a finishing stroke; anything that effectually ends or settles.
release from life.
a period of inactivity.
Origin of quietus:
1530–40; < ML quiētus quit (in quiētus est (he) is quit, a formula of acquittance), L: (he) is quiet, at rest (see quiet1)
rest, eternal rest, sleep, eternal sleep, quietus(noun)
euphemisms for death (based on an analogy between lying in a bed and in a tomb)
"she was laid to rest beside her husband"; "they had to put their family pet to sleep"
A stillness or pause; something that quiets or represses; removal from activity; especially: death.
Final settlement (as of a debt).
Origin: From quietus.
final discharge or acquittance, as from debt or obligation; that which silences claims; (Fig.) rest; death